Proton Mail: verified facts and rating
Checked 2026-11-03
Score breakdown
100% backed by facts · How we rank
Proton Mail against the market
The dot is the company, the line is the median of all companies in this ranking.
Cheapest paid plan per month (monthly billing)$4.49$6.00$4.99 · median $4.99
Proton Mail strengths and weaknesses
Pros
- End-to-end encryption is built in
- You can use your own domain ([email protected])
- Security checked by an independent audit or certification
- Free plan available
Cons
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All facts
| Fact | Value | Source | Checked |
|---|---|---|---|
| Built-in end-to-end encryption | Yes When emails travel between Proton Mail accounts, they are always end-to-end encrypted by default. | proton.me | 2026-11-03 |
| Independent audit or security certification | Yes All Proton apps are open source and have been independently audited and verified by third-party experts. | proton.me | 2026-11-03 |
| Open source apps | Yes All Proton apps are open source and have been independently audited and verified by third-party experts. | proton.me | 2026-11-03 |
| Hardware key sign-in (FIDO2/U2F/YubiKey) | Yes 2FA with hardware security keys Keep your Proton Account safe. You can use hardware security keys to verify your identity via two-factor authentication (2FA) | proton.me | 2026-11-03 |
| Cheapest paid plan per month (monthly billing) | $4.99 Mail Plus $4.99 $3.99 /month Save $12 | proton.me | 2026-11-03 |
| Free plan | Yes Proton Mail will always offer a free encrypted email plan that provides secure email functionality with basic features. | proton.me | 2026-11-03 |
| Mail storage on the free plan (GB) | 0.5 The Proton Mail Free plan comes with 500 MB of Mail storage, which you can increase up to 1 GB by completing the | proton.me | 2026-11-03 |
| Your own domain | Yes Support for 1 custom email domain | proton.me | 2026-11-03 |
| Mail storage on the cheapest paid plan (GB) | 15 Get Mail Plus 15 GB storage 1 user 10 encrypted email addresses | proton.me | 2026-11-03 |
| IMAP/SMTP access | Yes It lets you add your Proton Mail account to your favorite email client via IMAP/SMTP by creating a local email server on your computer. | proton.me | 2026-11-03 |
| Aliases and extra addresses | Yes 10 hide-my-email aliases | proton.me | 2026-11-03 |
| Founded | 2014 Proton was born in Switzerland in 2014 | proton.me | 2026-11-03 |
| Transparency report | Yes Aggregate statistics of legal orders that we have received for Proton Mail can be found below: | proton.me | 2026-11-03 |
| Company headquarters | Switzerland Proton services are operated by Proton AG, a Swiss corporation | proton.me | 2026-11-03 |
| Where mail is stored | Switzerland We have invested heavily in owning and controlling our own server hardware at several locations within Switzerland | proton.me | 2026-11-03 |
| Company | Proton AG Proton services are operated by Proton AG, a Swiss corporation | proton.me | 2026-11-03 |
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